package com.smilive.delay.queue.rabbitmq;

import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @program: rabbitmq_springboot
 * @Date: 2020/11/3 17:50
 * @Author: smilive
 * @Description:
 */
@Configuration
public class RabbitConfig {

    @Autowired
    private CachingConnectionFactory connectionFactory;

    @Bean
    public RabbitTemplate rabbitTemplate() {
        RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);
        rabbitTemplate.setMessageConverter(converter());

        // 消息是否成功发送到Exchange
        rabbitTemplate.setConfirmCallback((correlationData, ack, cause) -> {
            if (ack) {
                System.out.println("消息成功发送到Exchange");
            } else {
                System.out.println(String.format("消息发送到Exchange失败, {}, cause: {}", correlationData, cause));
            }
        });

        // 触发setReturnCallback回调必须设置mandatory=true, 否则Exchange没有找到Queue就会丢弃掉消息, 而不会触发回调
        rabbitTemplate.setMandatory(true);
        // 消息是否从Exchange路由到Queue, 注意: 这是一个失败回调, 只有消息从Exchange路由到Queue失败才会回调这个方法
        rabbitTemplate.setReturnCallback((message, replyCode, replyText, exchange, routingKey) -> {
            System.out.println(String.format("消息从Exchange路由到Queue失败: exchange: {}, route: {}, replyCode: {}, replyText: {}, message: {}", exchange, routingKey, replyCode, replyText, message));
        });

        return rabbitTemplate;
    }

    @Bean
    public Jackson2JsonMessageConverter converter() {
        return new Jackson2JsonMessageConverter();
    }

    
}
